To search for an effective pain-alleviating treatment for myasthenia gravis patients.Methods:Two groups were treated respectively by Huangfengshi serial therapy and Yinyang balancing therapy with Chinese herbs， and the curative effect was observed.Results:Short period of treatment and low recrudescence were found in the balancing therapy group with significant difference(P<0.01).Conclusion:As a safe， reliable and worth-trying treatment -Yinyang balancing therapy with Chinese herbs has definite curative effect on MG.